Once Jessica Simpson and Eric Johnson said their "I dos," the celebrating started!

People magazine snagged the footage from the stunning wedding reception, and caught Jessica's sister Ashlee Simpson and mom Tina (the maids of honor) making a scene on the dance floor-- and they even spotted the bride and groom busting a move! Also seen having a ball at the wedding is Scrubs star Donald Faison and his wife, Jessica's best friend, Cacee Cobb.

Jessica and Eric Johnson were married on July 5 at the San Ysidro Ranch in Montecito, Calif. About one minute into the video, you can hear the father-of-the-bride, Joe, introducing the newlyweds, "Mr. and Mrs. Eric Johnson," to their 275 guests.

According to the magazine, the wedding reception was inspired by the 1998 Great Expectations movie, starring Gwyneth Paltrow and Ethan Hawke. "She really wanted to have that feeling in the movie when they're dancing," wedding planner Mindy Weiss said.